1.
1st century
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The 1st century was the century that lasted from AD1 to AD100 according to the Julian calendar. It is often written as the 1st century AD or 1st century CE to distinguish it from the 1st century BC which preceded it, the 1st century is considered part of the Classical era, epoch, or historical period. During this period Europe, North Africa and the Near East fell under increasing domination by the Roman Empire, the reforms introduced by Augustus during his long reign stabilized the empire after the turmoil of the previous centurys civil wars. Later in the century the Julio-Claudian dynasty, which had been founded by Augustus, the Roman Empire generally experienced a period of prosperity and dominance in this period and the First Century is remembered as part of the Empires golden age. The 1st Century saw the appearance of Christianity, China continued to be dominated by the Han Dynasty, despite a fourteen-year interruption by the Xin dynasty under Wang Mang. Han rule was restored in AD23, Wang Mangs rule represents the watershed between the Western/Former Han and the Eastern/Later Han, the capital was also moved from Changan to Luoyang. Western Asia, Roman and Parthian Empires, Sabaean and Arabian Kingdoms, southeast Asia, Mandala of city-states, Kingdom of Funan East Asia, Han Dynasty, Yamatai, Xiongnu and Xianbei tribal chiefdoms, Three Kingdoms of Korea. North America, Central America, Mayan, Teotihuacan and Zapotec civilizations, caribbean, South America, Nazca, Moche civilizations, Tairona tribal chiefdoms. Early 1st century – Augustus of Primaporta, is made and it is now kept in Musei Vaticani, Braccio Nuovo, Rome. Early 1st century – Gemma Augustea is made and it is now kept at Kunsthistorisches Museum, Vienna. Early 1st century – House of the Silver Wedding, Pompeii, is built, excavated in 1893, the year of the silver wedding anniversary of Italys King Humbert and his wife, Margherita of Savoy, who have supported archaeological fieldwork at Pompeii. Early 1st century - Inner shrine, Ise, Mie, Mie Prefecture, is built, AD1, Lions became extinct in Western Europe. AD2, First Census of China, the census is one of the most accurate in Chinese history, AD7, Prince Cunobeline of Catuvellauni defeats the Trinovantes in England and establishes his capital at Camulodunum. AD9, Three Roman legions were ambushed and destroyed at Teutoberg Forest by Germans under the leadership of Arminius, AD9, Prince Cunobeline is crowned King of Catuvellauni, his Kingdom dominates Southern England. AD 9–23, Wang Mang temporarily overthrew the Han dynasty of China, AD14, Augustus Caesar, first emperor of Rome, dies. His adopted son, stepson and son-in-law Tiberius is his successor, AD25, The Han dynasty is restored by Liu Xiu who proclaims himself Emperor Guangwu of Han. AD 28–75, Emperor Ming of Han, Buddhism reaches China, humans arrive on Pentecost Island and establish the Bunlap tribe, among others. AD29, Jesus begins his ministry, AD33, The Crucifixion of Jesus

2.
Berber calendar
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The Berber calendar is the agricultural calendar traditionally used by Berbers. It is also known as the fellaḥi, the calendar is utilized to regulate the seasonal agricultural works. It is used in lieu of the Islamic calendar, a calendar considered ill-adapted for agriculture because it does not relate to seasonal cycles. The current Berber calendar is a legacy of the Roman province of Mauretania Caesariensis, the latter calendar was used in Europe before the adoption of the Gregorian calendar, with month names derived from Latin. Berber populations previously used various indigenous calendars, such as that of the Guanche autochthones of the Canary Islands, however, relatively little is known of these ancient calendrical systems. Not much is known about the division of time among the ancient Berbers, some elements of a pre-Islamic, and almost certainly a pre-Roman calendar, emerge from some medieval writings, analyzed by Nico van den Boogert. Some correspondences with the traditional Tuareg calendar suggest that in antiquity there existed, with degree of diffusion. According to a 17th-century manuscript by Tomás Marín de Cubas, they computed their year, called Acano and it began in summer, when the sun enters in Cancer, on June 21, at the first conjunction they celebrated nine festival days for the crop. The name of one month is known in the native language. It seems it was the month of the year, corresponding to August. Such a name, in case it was made up by something like *wen that of + smet, may correspond, in the list of medieval Berber month names, with the ninth and tenth months, but data are too scarce for this hypothesis to be deepened. The agricultural Berber calendar still in use is almost certainly derived from the Julian calendar, the only slight discrepancy lies in that the extra day in leap years is not usually added at the end of February, but at the end of the year. Jean Servier has doubted that the calendar descends directly from the Julian calendar of the Latin era, there are standard forms for the names of the Amazigh calendar. The table below provides the forms used in Morocco, Algeria and Tunisia. In some areas they may be different due to communication and manipulation by the government. Moreover, pronunciation differs according to the region, the coldest period is made up by 20 white nights, from 12 to 31 dujamber, and 20 black nights, beginning on the first day of yennayer, corresponding to the Gregorian 14 January. The first day of the year is celebrated in various ways in the different parts of North Africa, a widespread tradition is a meal with particular foods, which vary from region to region, but in many zones it is provided by the sacrifice of an animal. In Algeria, such a holiday is celebrated even by people who dont use the Berber calendar in daily life

3.
Hebrew calendar
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The Hebrew or Jewish calendar is a lunisolar calendar used today predominantly for Jewish religious observances. It determines the dates for Jewish holidays and the public reading of Torah portions, yahrzeits. The present Hebrew calendar is the product of evolution, including a Babylonian influence, when to add it was based on observation of natural agriculture-related events in Israel. Through the Amoraic period and into the Geonic period, this system was displaced by the mathematical rules used today. The principles and rules were codified by Maimonides in the Mishneh Torah in the 12th century. Maimonides work also replaced counting years since the destruction of the Temple with the modern creation-era Anno Mundi, the era used since the Middle Ages is the Anno Mundi epoch. As with Anno Domini, the words or abbreviation for Anno Mundi for the era should properly precede the date rather than follow it, AM5777 began at sunset on 2 October 2016 and will end at sunset on 20 September 2017. The Jewish day is of no fixed length, the Jewish day is modeled on the reference to. there was evening and there was morning. In the creation account in the first chapter of Genesis, based on the classic rabbinic interpretation of this text, a day in the rabbinic Hebrew calendar runs from sunset to the next sunset. In most populated parts of the world this is always approximately 24 standard hours, halachically, a day ends and a new one starts when three stars are visible in the sky. The time between sunset and the time when the three stars are visible is known as bein hashmashot, and there are differences of opinion as to which day it falls into for some uses. This may be relevant, for example, in determining the date of birth of a child born during that gap, there is no clock in the Jewish scheme, so that the local civil clock is used. The civil clock is used only as a reference point – in expressions such as, Shabbat starts at. In Judaism, an hour is defined as 1/12 of the time from sunrise to sunset, so, during the winter, an hour can be less than 60 minutes. This proportional hour is known as a shaah zmanit, a Jewish hour is divided into 1080 halakim or parts. A part is 3⅓ seconds or 1/18 minute, the ultimate ancestor of the helek was a small Babylonian time period called a barleycorn, itself equal to 1/72 of a Babylonian time degree. These measures are not generally used for everyday purposes, instead of the international date line convention, there are varying opinions as to where the day changes. One opinion uses the antimeridian of Jerusalem, the weekdays start with Sunday and proceed to Saturday, Shabbat

4.
Roman numerals
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The numeric system represented by Roman numerals originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages. Numbers in this system are represented by combinations of letters from the Latin alphabet, Roman numerals, as used today, are based on seven symbols, The use of Roman numerals continued long after the decline of the Roman Empire. The numbers 1 to 10 are usually expressed in Roman numerals as follows, I, II, III, IV, V, VI, VII, VIII, IX, Numbers are formed by combining symbols and adding the values, so II is two and XIII is thirteen. Symbols are placed left to right in order of value. Named after the year of its release,2014 as MMXIV, the year of the games of the XXII Olympic Winter Games The standard forms described above reflect typical modern usage rather than a universally accepted convention. Usage in ancient Rome varied greatly and remained inconsistent in medieval, Roman inscriptions, especially in official contexts, seem to show a preference for additive forms such as IIII and VIIII instead of subtractive forms such as IV and IX. Both methods appear in documents from the Roman era, even within the same document, double subtractives also occur, such as XIIX or even IIXX instead of XVIII. Sometimes V and L are not used, with such as IIIIII. Such variation and inconsistency continued through the period and into modern times. Clock faces that use Roman numerals normally show IIII for four o’clock but IX for nine o’clock, however, this is far from universal, for example, the clock on the Palace of Westminster in London uses IV. Similarly, at the beginning of the 20th century, different representations of 900 appeared in several inscribed dates. For instance,1910 is shown on Admiralty Arch, London, as MDCCCCX rather than MCMX, although Roman numerals came to be written with letters of the Roman alphabet, they were originally independent symbols. The Etruscans, for example, used

5.
2nd century
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The 2nd century is the period from 101 to 200 in accordance with the Julian calendar in the Common Era. It is considered part of the Classical era, epoch, or historical period, early in the century, the Roman Empire attained its greatest expansion under the emperor Trajan, but after his death became primarily defensive for the rest of its history. Much prosperity took place throughout the empire at this time, ruled as it were by the Five Good Emperors and this period also saw the removal of the Jews from Jerusalem during the reign of Hadrian after Bar Kokhbas revolt. This set in motion its ultimate decline, until it was overthrown in 220, AD96 –180, Five Good Emperors of Rome, Nerva, Trajan, Hadrian, Antoninus Pius, Marcus Aurelius. 101 –102,105 –106, The Dacian Wars, after two conflicts, Dacia is annexed as a Roman province. 114 –116, A war with Parthia results in Armenia and Mesopotamia being temporarily annexed into the Roman Empire,115 –117, Kitos War, adjunct to the Jewish–Roman wars. 122 –132, Hadrians Wall across Northern England,127 –163, Kanishka, Kushan Ruler. 132 –135, Bar Kokhbas revolt against Rome,132, Chinese chronicles described the existence of diplomatic relations between Java and China. 140 –180, Huvishka, Kushan ruler,142, The Antonine Wall is built across central Scotland. 144, Marcion, rejected by Church of Rome, founds Marcionism,161 –166, Roman–Parthian War of 161–166. 165 –180, The Antonine Plague in Rome,180 –192, Commodus, Roman Emperor. 184 –205, The Yellow Turban Rebellion of the Han Dynasty in China begins,184 –189, The Liang Province Rebellion breakouts in Northwest China. 189 –220, The End of the Han dynasty,190 –191, Warlords across China launches a Campaign against Dong Zhuo. 193, Roman Year of the Five Emperors,193 –211, Septimius Severus, Roman Emperor. Herakleitos makes The Unswept Floor, mosaic variant of a 2nd-century BC painting by Sosos of Pergamon and it is now kept at the Musei Vaticani, in Rome. 2nd or 3rd century – Standing Buddha, from Gandhara, is made and it is now kept at Lahore Museum, Lahore. Nagarjuna, founder of Madhyamaka Buddhism Polycarp, bishop of Smyrna, Zhang Heng, Chinese statesman, poet, inventor, astronomer, geographer, and engineer. Zhang Jue, Chinese rebel leader Zhang Zhongjing, one of the most famous Chinese physicians during Han Dynasty, ptolemy compiles a catalogue of all stars visible to the naked eye

6.
3rd century
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The 3rd century was the period from 201 to 300 A. D. In this century, the Roman Empire saw a crisis, marking the beginning of Late Antiquity, in Persia, the Parthian Empire was succeeded by the Sassanid Empire. In India, the Kushan Empire was replaced by the Gupta Empire, China was in the Three Kingdoms period. The Xiongnu formed the Tiefu state under Liu Qubei, Korea was ruled by the Three Kingdoms of Korea. At about this time in Sub-Saharan Africa, the Bantu expansion reached Southern Africa, in Pre-Columbian America, the Adena culture of the Ohio River valley declined in favor of the Hopewell culture. The Maya civilization entered its Classic Era, after the death of Commodus in the previous century the Roman Empire was plunged into a civil war. When the dust settled, Septimius Severus emerged as emperor, establishing the Severan dynasty, unlike previous emperors, he openly used the army to back his authority, and paid them well to do so. The regime he created is known as the Military Monarchy as a result, the majority of these men were assassinated, or killed in battle, and the empire almost collapsed under the weight of the political upheaval, as well as the growing Persian threat in the east. Under its new Sassanid rulers, Persia had grown into a superpower. These reforms were finally realized late in the century under the reign of Diocletian, one of them being to divide the empire into an eastern and western half, early 3rd century – Burial in catacombs becomes common place. 208, the Chinese naval Battle of Red Cliffs occurs,211 –217, Caracalla, Roman Emperor. 212, Constitutio Antoniniana grants citizenship to all free Roman men,212 –217, Baths of Caracalla. 220, The Han Dynasty comes to an end with establishment of the Three Kingdoms in ancient China,220 –280, The Three Kingdoms period. 222 –235, Alexander Severus, Roman Emperor,224, Ardashir I of the Sassanid dynasty conquers the Parthian empire at the Battle of Hormozdgān. 230 –232, Sassanid dynasty of Persia launches a war to reconquer lost lands in the Roman east,234, Zhuge Liang dies of illness at the standoff of Wuzhang Plains. 235 –284, Crisis of the Third Century shakes Roman Empire,244, Battle of Xingshi in China. 250 –538, Kofun era, the first part of the Kofun period in Japan,260, Roman Emperor Valerian I is taken captive by Shapur I of Persia. 263, Cao Wei conquers the Shu Han Kingdom,265, The Jin Dynasty is founded after the overthrow of the Cao Wei Dynasty by Sima Yan

7.
Islamic calendar
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The Islamic, Muslim, or Hijri calendar is a lunar calendar consisting of 12 months in a year of 354 or 355 days. It is used to date events in many Muslim countries and it is also used by Muslims to determine the proper days of Islamic holidays and rituals, such as the annual period of fasting and the proper time for the pilgrimage to Mecca. The Islamic calendar employs the Hijri era whose epoch was retrospectively established as the Islamic New Year of AD622, during that year, Muhammad and his followers migrated from Mecca to Yathrib and established the first Muslim community, an event commemorated as the Hijra. In the West, dates in this era are usually denoted AH in parallel with the Christian, in Muslim countries, it is also sometimes denoted as H from its Arabic form. In English, years prior to the Hijra are reckoned as BH, the current Islamic year is 1438 AH. In the Gregorian calendar,1438 AH runs from approximately 3 October 2016 to 21 September 2017, four of the twelve Hijri months are considered sacred, Rajab, and the three consecutive months of Dhū al-Qa‘dah, Dhu al-Ḥijjah and Muḥarram. As the lunar calendar lags behind the solar calendar by about ten days every gregorian year, the cycle repeats every 33 lunar years. Each month of the Islamic calendar commences on the birth of the new lunar cycle, traditionally this is based on actual observation of the crescent marking the end of the previous lunar cycle and hence the previous month, thereby beginning the new month. Consequently, each month can have 29 or 30 days depending on the visibility of the moon, astronomical positioning of the earth and weather conditions. However, certain sects and groups, most notably Dawoodi Bohra Muslims and Shia Ismaili Muslims, use a tabular Islamic calendar in which odd-numbered months have thirty days, in Arabic, the first day of the week corresponds with Sunday of the planetary week. The Islamic weekdays, like those in the Hebrew and Baháí calendars, the Christian liturgical day, kept in monasteries, begins with vespers, which is evening, in line with the other Abrahamic traditions. Christian and planetary weekdays begin at the following midnight, Muslims gather for worship at a mosque at noon on gathering day which corresponds with Friday. Thus gathering day is regarded as the weekly day of rest. A few others have adopted the Saturday-Sunday weekend while making Friday a working day with a midday break to allow time off for worship. Inscriptions of the ancient South Arabian calendars reveal the use of a number of local calendars, at least some of these calendars followed the lunisolar system. For Central Arabia, especially Mecca, there is a lack of epigraphical evidence, both al-Biruni and al-Masudi suggest that the Ancient Arabs used the same month names as the Muslims, though they also record other month names used by the pre-Islamic Arabs. Nevertheless, the Islamic position equating Nisan with Dhū al-Ḥijja has prevailed, for a comparison between the Islamic and pre-Islamic months, see Islamic and Jahili months. The Islamic tradition is unanimous in stating that Arabs of Tihamah, Hejaz, the forbidden months were four months during which fighting is forbidden, listed as Rajab and the three months around the pilgrimage season, Dhu al-Qa‘dah, Dhu al-Hijjah, and Muharram

8.
Hindu calendar
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Hindu calendar is a collective term for the various lunisolar calendars traditionally used in Hinduism. They adopt a similar underlying concept for timekeeping, but differ in their emphasis to moon cycle or the sun cycle, the names of months. A Hindu calendar is referred to as Panchanga. The ancient Hindu calendar is similar in design to the Jewish calendar. Early Buddhist communities of India adopted the ancient Indian calendar, later Vikrami calendar, Buddhist festivals continue to be scheduled according to a lunar system. The Buddhist calendar and the traditional calendars of Cambodia, Laos, Myanmar, Sri Lanka. Similarly, the ancient Jainism traditions have followed the lunisolar system as the Hindu calendar for festivals, texts. However, the Buddhist and Jaina timekeeping systems have attempted to use the Buddha, the Hindu calendar is also important to the practice of Hindu astrology and zodiac system, most of which it adopted from Greece, in centuries after the arrival of Alexander the Great. The Indian national calendar or Saka calendar was introduced in 1952 based on the traditional Hindu calendars and this study was one of the six ancient Vedangas, or ancillary science connected with the Vedas – the scriptures of Hinduism. The ancient Indian culture developed a time keeping methodology and calendars for Vedic rituals. David Pingree has proposed that the field of timekeeping in Jyotisha may have derived from Mesopotamia during the Achaemenid period. Ohashi states that this Vedanga field developed from actual astronomical studies in ancient India, timekeeping as well as the nature of solar and moon movements are mentioned in Vedic texts. For example, Kaushitaki Brahmana chapter 19.3 mentions the shift in the location of the sun towards north for 6 months. The Vikrami calendar is named after king Vikramaditya and starts in 57 BCE, Hindu scholars attempted to keep time by observing and calculating the cycles of sun, moon and the planets. These texts present Surya and various planets and estimate the characteristics of the respective planetary motion, other texts such as Surya Siddhanta dated to have been complete sometime between the 5th century and 10th century present their chapters on various planets with deity mythologies. The manuscripts of texts exist in slightly different versions, present Surya- and planets-based calculation. These vary in their data, suggesting that the text were open and they tracked the solar year by observing the entrance and departure of surya in the constellation formed by stars in the sky, which they divided into 12 intervals of 30 degrees each. Like other ancient human cultures, Hindus innovated a number of systems of which intercalary months became most used, as their calendar keeping and astronomical observations became more sophisticated, the Hindu calendar became more sophisticated with complex rules and greater accuracy

9.
Kali Yuga
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Kali Yuga is the last of the four stages the world goes through as part of the cycle of yugas described in the Sanskrit scriptures, within the present Mahayuga. The other ages are called Satya Yuga, Treta Yuga, Kali Yuga is associated with the demon Kali. The Kali of Kali Yuga means strife, discord, quarrel or contention, according to Puranic sources, Krishnas departure marks the end of Dvapara Yuga and the start of Kali Yuga, which is dated to 17/18 February 3102 BCE. According to the Surya Siddhanta, Kali Yuga began at midnight on 18 February 3102 BCE and this is also considered the date on which Lord Krishna left the earth to return to his heavenly abode. This information is placed at the temple of Bhalka, the place of this incident, according to the astronomer and mathematician Aryabhatta the Kali Yuga started in 3102 BCE. He finished his book “Aryabhattiya” in 499 CE, in which he gives the year of the beginning of Kali Yuga. He writes that he wrote the book in the year 3600 of the Kali Age at the age of 23. As it was the 3600th year of the Kali Age when he was 23 years old, and given that Aryabhatta was born in 476 CE, according to KD Abhyankar, the starting point of Kaliyuga is an extremely rare planetary alignment, which is depicted in the Mohenjo-Daro seals. Going by this alignment the year 3102 BCE is slightly off, the actual date for this alignment is February 7 of 3104 BCE. There is also sufficient proof to believe that Vrdhha Garga knew of precession at least by 500 BCE, Garga had calculated the rate of precession to within 30% of what the modern scholars estimate. The Kali Yuga is thought by some authors to last 6480 years although other durations have been proposed, hindus believe that human civilization degenerates spiritually during the Kali Yuga, which is referred to as the Dark Age because in it people are as far away as possible from God. Hinduism often symbolically represents morality as an indian bull, in Satya Yuga, the first stage of development, the bull has four legs, but in each age morality is reduced by one quarter. By the age of Kali, morality is reduced to only a quarter of that of the golden age, the Mahabharata War and the decimation of Kauravas thus happened at the Yuga-Sandhi, the point of transition from one yuga to another. A discourse by Markandeya in the Mahabharata identifies some of the attributes of Kali Yuga, in relation to rulers, it lists, Rulers will become unreasonable, they will levy taxes unfairly. Rulers will no longer see it as their duty to promote spirituality, or to protect their subjects, people will start migrating, seeking countries where wheat and barley form the staple food source. (Srimad-Bhagavatam With regard to relationships, Markandeyas discourse says, Avarice. Humans will openly display animosity towards each other, people will have thoughts of murder with no justification and will see nothing wrong in that. Lust will be viewed as acceptable and sexual intercourse will be seen as the central requirement of life

10.
Chinese calendar
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Traditional Chinese calendar is a lunisolar calendar which reckons years, months and days according to astronomical phenomena. It is used for activities in China and overseas Chinese communities. It depictures and lists the dates of traditional Chinese holidays, and guides Chinese people in selecting the most auspicious days for weddings, funerals, moving, in the Chinese calendar, the days begin and end at midnight. The months begin on the day with the dark moon, the years begin with the dark moon near the midpoint between winter solstice and spring equinox. The solar terms are the important components of the Chinese calendar, in a month, there are one to three solar terms. The currently used traditional Chinese calendar is the end result of centuries of evolution, many astronomical and seasonal factors were added by ancient scientists, and people can reckon the date of natural phenomena such as the moon phase and tide upon the Chinese calendar. The Chinese calendar has over 100 variants, whose characteristics reflect the evolutionary path. As with Chinese characters, different variants are used in different parts of the Chinese cultural sphere, calendars in Mongolia and Tibet have absorbed elements from the Chinese calendar and elements from other systems, but they are not direct descendants of the Chinese calendar. The official calendar in China is the Gregorian calendar, but the traditional Chinese calendar still plays an important role there. The Chinese calendar is known officially as the Rural Calendar, but is referred to by other names, such as the Former Calendar. The Chinese calendar preserves traditional East Asian culture, although the month sequences of Chinese calendar is decided by the solar term, the Chinese calendar is not an agriculture calendar. The Chinese calendar has greatly influenced the traditional calendars around Asia, the calendar has a year, month and date frame. The key elements are the day, synodic month and solar year, the Chinese calendar is a lunisolar calendar, similar to the Hindu and Hebrew calendars. The concepts in the Chinese, Hindu, and Hebrew calendars, day, in the Chinese calendar, a day starts from the midnight, in the Hindu calendars, a day starts from sunrise, and in the Hebrew calendar, a day starts from sunset. Month, the time is based on the obliquity of the moon path, a month is about 29 17/32 days. Phase, 1/30 month, 12° obliquity of the moon path, a unique concept of dating method in the Hindu calendar, a phase is about 63/64 day, which derived out the 64 divinatory symbols. Date, the day number in a month, in the Chinese and Hebrew calendars, days are numbered in sequence from 1 to 29 or 30, and in the Hindu calendars, the days are numbered according to the number of the phase in the days. In the Hindu calendars, some dates may be vacant, Year, the time based on the earths revolution

A page from a Tunisian calendar, showing the correspondence of 1 Yennayer ʿajmi (in red on bottom) with the 14 January of the Gregorian calendar. The writing on the bottom signals that it is ʿajmi New Year's Day and that al-lyali al-sud ("the black nights") are beginning.

Iḍ n innayr

Photo taken on 31 December 2007 near Tafraout (Morocco), with the writings aseggas ameggaz ("good year") in Tifinagh and bonne année 2959 ("good year 2959") in French. Note the 1-year mistake, as 2959 corresponds to the Gregorian year 2009.